Means for operating turret cross-slides.



No 895,788. PATBNTED AUG. 11, 1908.

' J. C. POTTER.

MEANS FOR OPERATING TURBET GROSS SLIDES.

'APPLIOATIONV FILED MAY 29, 1903.

2 SHEETS-SHEET 1.

ea-ML No. 895,788. PATENTBD AUG. 11, 1908. J. O. POTTER.

MEANS FOR OPERATING TURRET GROSS SLIDES. APPLICATION FILED MAY 29, 1903.

2 SHEETS-SHEET 2.

' aitouwq UNITED STATES. PATENT OFFICE. A,

JAMES CHARLES POTTER, OF PAWTUCKET, RHODE 'ISLAND, ASSIGNOR TO POTTERIAND JOHNSTON MACHINE COMPANY,-OF PAWTUCKET, RHODE ISLAND; A CORPORATION OF -RHODE ISLAND.

To all whom it may concern;

Be it known that I, JAMES CHARLES PoT- TER, of Pawtucket, in the county of Provi- Fig. 2 is a cross section on the line 22 Fig. 1

and Fig. 3 a plan View of a portion of a turret lathe embodying a difierent form of my invention.

In turning irregular or other unusual shapes it is desirable to impart to the turning too a compound motion, and the object of my invention is to provide simple and otherwise desirable means for producing the desired compound movement of a turning tool, and to this end my invention consists in a lathe having the features of construction substantially as hereinafter specified and claimed.

The type of lathe which I have chosen in which to embody my invention is a turret lathe such as is shown, in United States Patent No. 752,257, February 16th, 1904, and the tool to which I impart the compound movement, is one carried by the turret. The

turret A of the lathe illustrated is of ordinary construction, being provided in its sides with holes or sockets for the shanks of the various tools to be used and supported'on a slide B that is reciprocable in ways or guides to-' wards and from the work, held in a chuck 0.

Any suitable means may be employed for: reciprocating the turret slide and as such means form no part of the present invention, it is not thought necessary to illustrate and describe the same. Mounted on the turret by means of a shank which fits one of the two holes or sockets of the turret is a bed or way D for a tool-carrying slide E, the latter, when in its position for the tool-to be used, constituting a cross-slide. A coil sprin F acting at one end on the slide E yielding y holds the latter at one limit of its motion, such limit being fixed by a suitable'sto d on the bed D,'against which the slide strl es'. The

lathe is also provided in the usual place between the turret slide and the chuck or Work- Specification of Letters Patent.

Application filed May 29, 1903. Serial No. 159,331.

MEANS FOR OPERATING TUBRET GROSS-SLIIDES.

Iatented Aug. 11, 1908.

holder with an ordinary cross-slide G, such as v is shown in the patent hereinbefore men tioned, having the usual or any desired 'means for reciprocating it, which means are not shown nor will they be described as they form no part of the present invention.

Moun! ed upon the ordinary cross-slide G- on he shears G is a projecdon or bearing surface H, situated so that it can engage either a part attached to, or the end I of the turret cross-slide E, and thereby impart movement "to the latter from the ordinary cross-slide G, when the cross-slide G is moved. On che retraciion of the cross-slide G, the cross-slide E will be moved by the action of ,the spring F. The tool c carried by the turret cross-slide E will thus be moved transversely of the work. Said 1001 8, shown as an ordinary cut'." er is secured to the turret cross-slide E by a tool post or clamp e of usual construction. The projeciion or bearing surface H is illustrated as'a rod which is clamped to a block G adjustably mounted upon the top of a cross-slide G of ordinary construction, which is mounted upon the ordinary shears G The bearing surface H may be of such form that it acts to move the turret cross-- slide E only when the ordinary cross-slide is moving or it may be given a cam form as" shown in Fig. 3, where it is designated H so that the part of the movement of the turret cross-slide E will be produced when :Lhejordinary cross-slide is sta'iionary, the transverse movement of the turret cross-slide in such case being produced by the movement of the turret slide. In some cases it may be desirable to produce all the required transverse movementproduce the desired movement of the turret cross-slide.

t'will be seen that as a result of the movement of the turret slide in the direction towards the work and of the action of the bearing surface H of the ordinary cross-slide, either by the movement of the latter or by reason of a simple cam action, or by both of these, a compound movement will be imparted to the turret cross-slide tool, thus enn of course, other changes from the particular embodiment of my invention which I have shown or described for he purpose of illustra' ingthe invention can be made which will involve no departure from the principle of my invention.

Having thus described my invention, what I, v

and means whereby movement of the turret I claim is:

1. In a lathe, the combination of two toolslides, or holders whose paths of movement lie in the same direction, means whereby one receives its movement from the other, and a movable support for the tool-slide that is moved, which su port has a path of move-' ment crosswise 0 said other paths, the tool slide that is moved carrying a tool arranged to work while both movements of its shde are in regress.

2. n a lathe the combination of a turret, a cross-slide carried thereby, a secondcrossslide, and meanswhereby the latter co-acl's with the turret cross-slide to cause the movement of the turret cross-slide, said turret cross slide carrying a tool arranged to work While the movement of the turret cross slide is in progress.

3. In a lathe, the combination of a turret, a reciprocable slide on which it is mounted, a cross-slide on the turret, a second cross-slide,

slide may be caused from said second slide.

1 In testimony that I claim the foregoing I have hereunto set my hand,

- JAMES CHAR-LES POTTER, Witnesses: 4

JOHN JOHNSTON,

EARL H. ROBERTS. 

